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Lesson 8 of 9

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Six ideas, six checks. Here is a table to look back at.

Fractions — every move
MoveHow it goes
Name a pieceOnly when the whole is cut into equal parts.
Read the two numbersBottom: how many equal parts. Top: how many you took.
Place it on the lineCut each step into bottom-number parts. Walk top-number steps.
Rename itMultiply top and bottom by the same number.
Compare twoMatch the bottom numbers first. Then compare the tops.
Add like piecesTops add. The bottom stays.

A roti is torn into 3 pieces. One is wide, one medium, one thin. Is the wide piece 1/3?

  • Yes, 3 pieces means each is a third
  • No, the pieces are not equal, so none is a third
  • No, a roti cannot be cut into thirds

In 5/8, what does the bottom number 8 tell you?

  • You took 8 pieces
  • The whole is cut into 8 equal parts
  • There are 8 wholes

You mark 3/5 on a line from 0 to 1. What do you do?

  • Cut the line into 3 parts. Count 5 of them
  • Cut 0 to 1 into 5 equal parts. Count 3 of them
  • Put the mark halfway

A strip is shaded 3/4. Every part is cut in half. What is the shaded part now?

  • 3/8
  • 6/8
  • 4/5

Which is more, 3/4 or 3/5?

  • 3/4
  • 3/5, because 5 is bigger than 4
  • They are the same

What is 1/4 + 1/4?

  • 2/8
  • 2/4
  • 1/8

That is Chapter 7, Fractions, in your book.

Next: Playing with Constructions — circles and corners, with a ruler and compass.

Reveal every answer to finish this lesson.